mbed official / mbed-src

mbed library sources

Dependents:   Encrypted my_mbed lklk CyaSSL_DTLS_Cellular ... more

Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_STM/TARGET_STM32F4/port_api.c@635:a11c0372f0ba, 2015-09-30 (annotated)

Committer:
mbed_official
Date:
Wed Sep 30 17:00:09 2015 +0100
Revision:
635:a11c0372f0ba
Parent:
442:d916d321e60f 
Synchronized with git revision d29c98dae61be0946ddf3a3c641c7726056f9452



Full URL: https://github.com/mbedmicro/mbed/commit/d29c98dae61be0946ddf3a3c641c7726056f9452/



Added support for SAMW25

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 340:28d1f895c6fe 1 /* mbed Microcontroller Library
mbed_official 340:28d1f895c6fe 2 *******************************************************************************
mbed_official 340:28d1f895c6fe 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 340:28d1f895c6fe 4 * All rights reserved.
mbed_official 340:28d1f895c6fe 5 *
mbed_official 340:28d1f895c6fe 6 * Redistribution and use in source and binary forms, with or without
mbed_official 340:28d1f895c6fe 7 * modification, are permitted provided that the following conditions are met:
mbed_official 340:28d1f895c6fe 8 *
mbed_official 340:28d1f895c6fe 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 340:28d1f895c6fe 10 * this list of conditions and the following disclaimer.
mbed_official 340:28d1f895c6fe 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 340:28d1f895c6fe 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 340:28d1f895c6fe 13 * and/or other materials provided with the distribution.
mbed_official 340:28d1f895c6fe 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 340:28d1f895c6fe 15 * may be used to endorse or promote products derived from this software
mbed_official 340:28d1f895c6fe 16 * without specific prior written permission.
mbed_official 340:28d1f895c6fe 17 *
mbed_official 340:28d1f895c6fe 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 340:28d1f895c6fe 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 340:28d1f895c6fe 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 340:28d1f895c6fe 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 340:28d1f895c6fe 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 340:28d1f895c6fe 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 340:28d1f895c6fe 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 340:28d1f895c6fe 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 340:28d1f895c6fe 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 340:28d1f895c6fe 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 340:28d1f895c6fe 28 *******************************************************************************
mbed_official 340:28d1f895c6fe 29 */
mbed_official 340:28d1f895c6fe 30 #include "port_api.h"
mbed_official 340:28d1f895c6fe 31 #include "pinmap.h"
mbed_official 340:28d1f895c6fe 32 #include "gpio_api.h"
mbed_official 340:28d1f895c6fe 33 #include "mbed_error.h"
mbed_official 340:28d1f895c6fe 34
mbed_official 340:28d1f895c6fe 35 #if DEVICE_PORTIN || DEVICE_PORTOUT
mbed_official 340:28d1f895c6fe 36
mbed_official 340:28d1f895c6fe 37 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 340:28d1f895c6fe 38
mbed_official 340:28d1f895c6fe 39 // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
mbed_official 340:28d1f895c6fe 40 // low nibble = pin number
mbed_official 340:28d1f895c6fe 41 PinName port_pin(PortName port, int pin_n)
mbed_official 340:28d1f895c6fe 42 {
mbed_official 340:28d1f895c6fe 43 return (PinName)(pin_n + (port << 4));
mbed_official 340:28d1f895c6fe 44 }
mbed_official 340:28d1f895c6fe 45
mbed_official 340:28d1f895c6fe 46 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
mbed_official 340:28d1f895c6fe 47 {
mbed_official 340:28d1f895c6fe 48 uint32_t port_index = (uint32_t)port;
mbed_official 340:28d1f895c6fe 49
mbed_official 340:28d1f895c6fe 50 // Enable GPIO clock
mbed_official 340:28d1f895c6fe 51 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 340:28d1f895c6fe 52 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 340:28d1f895c6fe 53
mbed_official 340:28d1f895c6fe 54 // Fill PORT object structure for future use
mbed_official 340:28d1f895c6fe 55 obj->port = port;
mbed_official 340:28d1f895c6fe 56 obj->mask = mask;
mbed_official 340:28d1f895c6fe 57 obj->direction = dir;
mbed_official 340:28d1f895c6fe 58 obj->reg_in = &gpio->IDR;
mbed_official 340:28d1f895c6fe 59 obj->reg_out = &gpio->ODR;
mbed_official 340:28d1f895c6fe 60
mbed_official 340:28d1f895c6fe 61 port_dir(obj, dir);
mbed_official 340:28d1f895c6fe 62 }
mbed_official 340:28d1f895c6fe 63
mbed_official 340:28d1f895c6fe 64 void port_dir(port_t *obj, PinDirection dir)
mbed_official 340:28d1f895c6fe 65 {
mbed_official 340:28d1f895c6fe 66 uint32_t i;
mbed_official 340:28d1f895c6fe 67 obj->direction = dir;
mbed_official 340:28d1f895c6fe 68 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 340:28d1f895c6fe 69 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 340:28d1f895c6fe 70 if (dir == PIN_OUTPUT) {
mbed_official 340:28d1f895c6fe 71 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
mbed_official 340:28d1f895c6fe 72 } else { // PIN_INPUT
mbed_official 340:28d1f895c6fe 73 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 340:28d1f895c6fe 74 }
mbed_official 340:28d1f895c6fe 75 }
mbed_official 340:28d1f895c6fe 76 }
mbed_official 340:28d1f895c6fe 77 }
mbed_official 340:28d1f895c6fe 78
mbed_official 340:28d1f895c6fe 79 void port_mode(port_t *obj, PinMode mode)
mbed_official 340:28d1f895c6fe 80 {
mbed_official 340:28d1f895c6fe 81 uint32_t i;
mbed_official 340:28d1f895c6fe 82 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 340:28d1f895c6fe 83 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 340:28d1f895c6fe 84 pin_mode(port_pin(obj->port, i), mode);
mbed_official 340:28d1f895c6fe 85 }
mbed_official 340:28d1f895c6fe 86 }
mbed_official 340:28d1f895c6fe 87 }
mbed_official 340:28d1f895c6fe 88
mbed_official 340:28d1f895c6fe 89 void port_write(port_t *obj, int value)
mbed_official 340:28d1f895c6fe 90 {
mbed_official 340:28d1f895c6fe 91 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
mbed_official 340:28d1f895c6fe 92 }
mbed_official 340:28d1f895c6fe 93
mbed_official 340:28d1f895c6fe 94 int port_read(port_t *obj)
mbed_official 340:28d1f895c6fe 95 {
mbed_official 340:28d1f895c6fe 96 if (obj->direction == PIN_OUTPUT) {
mbed_official 340:28d1f895c6fe 97 return (*obj->reg_out & obj->mask);
mbed_official 340:28d1f895c6fe 98 } else { // PIN_INPUT
mbed_official 340:28d1f895c6fe 99 return (*obj->reg_in & obj->mask);
mbed_official 340:28d1f895c6fe 100 }
mbed_official 340:28d1f895c6fe 101 }
mbed_official 340:28d1f895c6fe 102
mbed_official 340:28d1f895c6fe 103 #endif